SROCKER X9 2.4GHz Wireless Rechargeable Professional Gaming Mouse/Mice Optical LED 4 Adjustable DPI Levels Silent Click with 6 Buttons, Nano Receiver and 2 Meters Long USB Charging Cable for Gamers 2.4GHz Wireless: This mouse adopts 2.4GHz wireless technology, allowing you move your mouse freely. The wireless distance is up to 10 meters, which is handy to move and gives you a fresh gaming speed. Rechargeable Battery: With high-quality Ni-MH rechargeable battery and USB cable, you don't need to worry about changing battery often, which is environmental friendly. Once it is fully charged for 5 hours, the mouse can be used for about two weeks. You can also replace the Ni-MH battery with 2*AAA batteries. Adjustable DPI: 4 DPI levels (800/1000/1200/1600) can make you select your preferred cursor speed to meet the need of game and working. Silent Click: We adopt the unique silent technology and high-ranking mute shrapnels in left and right buttons. No click sound design makes you silently defeat the enemies. At night, it can help your family or roommates to have a good sleep in a quiet environment. Used When Charging: The USB charging cable is 2 meters long so that the mouse can be used during charging. The auto sleep function can save and prolong battery life. On/off switch on the bottom helps to conserve power.